The US grid will be impacted by the solar eclipse

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A total solar eclipse will bring complete darkness to 12 US states today – watch live to see its effect on solar power and the grid across all 50 US states.
The US Department of Energy Solar Energy Technologies Office, the National Renewable Energy Laboratory (NREL), and the North American Electric Reliability Corporation have partnered to evaluate the impact of the eclipse on the grid.
Join an NREL livestream during the eclipse for a look at how the power grid is impacted by the loss of solar generation and how that reduction of generation is managed at the regional and interconnection levels.
The livestream coverage will run for the entirety of the eclipse, and no registration is required – you can join at any time.
NREL researchers have calculated the maximum power reduction from solar photovoltaics today in all three interconnection areas in the US.
As the eclipse cuts a path from Texas to Maine, they expect a 71% peak power reduction in the East, 45% in the West, and 93% in the Texas grid, ERCOT.
Due to the number of solar power plants in the Eastern Interconnection, this region will experience the largest reduction in overall power that would otherwise be generated from the sun.
Following the solar eclipse, NREL will conduct post-event analysis on the performance of the power systems during the eclipse and successful mitigation measures taken by grid operators, and publish the findings.

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Twelve US states will experience total darkness today due to a total solar eclipse; follow along live to see how this affects solar power and the grid in all 50 US states.

To assess the eclipse’s effect on the grid, the US Department of Energy Solar Energy Technologies Office, the National Renewable Energy Laboratory (NREL), and the North American Electric Reliability Corporation have teamed together.

Come see how the loss of solar generation affects the power grid and how regional and interconnection management handles this reduction in generation by tuning into an NREL livestream during the eclipse.

The term “totality” refers to the four minutes during which the sun will be completely obscured from view; however, even far outside the path of totality, regions may still see some degree of reduced solar output during this time.

As the eclipse moves across the US, viewers will see exactly what the NREL control room is seeing in almost real-time, including real-time data from grid operators such as the current generation mix and shifting energy demand.

You can tune in at any moment to watch the full eclipse livestream, which will be available for free without registration.

The greatest power reduction from solar photovoltaics in the US’s three interconnected areas has been determined by NREL researchers.

They predict that the eclipse will reduce peak power in the East by 71 percent, in the West by 45 percent, and in the Texas grid, ERCOT, by 93 percent as it traces a path from Texas to Maine.

This area will see the biggest decrease in the total amount of power that would otherwise be produced by the sun because of the quantity of solar power plants located in the Eastern Interconnection. In terms of the percentage of reduction, the impact in ERCOT is significantly greater.

When the solar eclipse has passed, NREL will analyze the power systems’ performance and the effective mitigation strategies that grid operators implemented. It will then publish the results of this post-event analysis.

Collaborating on the study with Marilyn Jayachandran of the North American Electric Reliability Corporation, “a systematic study of the eclipse’s impacts will provide valuable insights for grid operators across the country as they prepare for extreme weather events”.

Click here to watch the NREL livestream.

See more: In Texas, solar energy eclipsed coal for the first time ever in March.

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